A family of dinitrogen complexes, [(LAu)(6)(N-2)](2+) (L = a phosphine), with the dinitrogen unit bridging two clusters of three gold atoms have been prepared from hydrazine and [(LAu)(3)(O)](+). Structural characterization of the PPh(2)(i)Pr (Ph, phenyl; Pr-i, isopropyl) derivative shows a nitrogen-nitrogen single-bond distance indicative of hydrazido (N-2(4-)) character for the dinitrogen unit. The complexes can be reduced and protonated to give low [13% when L = PPh(2)Me (Me, methyl)] to quantitative [100% when L = P(p-MeOC(6)H(5))(3)] yields of ammonia, establishing that bonding of dinitrogen to six metal atoms can lead to facile cleavage of the nitrogen-nitrogen bond.